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NR 4-6/2007
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Aberracje wyższego
rzędu w fizjologicznym układzie optycznym – doświadczenia własne
Higher order aberrations in
physiological optical system – own experience
Beata Żelichowska, Marek Rękas, Karolina
Krix-Jachym, Marcin Rubajczyk
Z Kliniki Okulistycznej Wojskowego Instytutu Medycznego w
Warszawie
Kierownik: prof. dr hab. n. med. Andrzej Stankiewicz |
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| Summary: |
Purpose: To assess higher
order aberrations in the physiological optical system in
relation to pupil diameter and age of people studied.
Material and methods: The study comprised 235 eyes of
122 subjects (67 women and 55 men) (mean age 43.8 ±15.5
years). Aberrations of the optical system were assessed
using a LADARWave aberrometer (Alcon Laboratories).
Aberration finding analysis included age, the pupil
diameter, and their interrelations. ANOVA,
Kruskal-Wallis test, multiple comparison and Ch2 tests
were used to establish the statistical significance, and
the correlation coefficient was calculated according to
Spearman test.
Results: Basing on the studies performed, we found that
the older subjects were the more statistically
significant was the increase in the prevalence of higher
order aberrations, including coma and spherical
aberrations, at the same pupil diameter of 5-6.5 mm.
When the relationship between aberrations and the pupil
diameter was analyzed in a group of subjects aged 20-40
yrs, it turned out that the bigger the pupil diameter
was the more statistically significant was the increase
of higher order aberrations, including coma. While
assessing the whole group studied we found a
statistically significant reverse correlation between
the pupil diameter and the subjects’ age. Aberrations
parameters between age groups 20-40, 40-60 and over 60
y. did not differ significantly.
Conclusions: In the optical system an age-related
increase of higher order aberrations is compensated by
miosis, which reduces disadvantages of these aberrations
and maintains the best optical quality of retinal image. |
| Słowa kluczowe: |
aberracje wyższego rzędu,
fizjologiczny układ optyczny, analiza czoła fali,
wielomian Zernikego. |
| Key words: |
higher order aberrations,
physiological optical system, wavefront analysis,
Zernike polynomial. |
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